Trimmer attachment for lawn mower



FIG. 1 is a front, right side perspective view of a trimmer attachment for lawn mower showing the design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a trimmer attachment for lawn mower, as shown and described. 